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HCS12 Fiches technique(PDF) 17 Page - Freescale Semiconductor, Inc

No de pièce HCS12
Description  HCS12 Microcontrollers
PDF  452 Pages
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Fabricant  FREESCALE [Freescale Semiconductor, Inc]
Site Internet  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

HCS12 Fiches technique(HTML) 17 Page - Freescale Semiconductor, Inc

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S12CPUV2 Reference Manual, Rev. 4.0
Freescale Semiconductor
17
1.3.2 Memory and Addressing
M
— 8-bit memory location pointed to by the effective
address of the instruction
M : M+1
— 16-bit memory location. Consists of the contents of the
location pointed to by the effective address
concatenated with the contents of the location at the
next higher memory address. The most significant byte
is at location M.
M~M+3
M(Y)~M(Y+3)
— 32-bit memory location. Consists of the contents of the
effective address of the instruction concatenated with
the contents of the next three higher memory locations.
The most significant byte is at location M or M(Y).
M(X)
— Memory locations pointed to by index register X
M(SP)
— Memory locations pointed to by the stack pointer
M(Y+3)
— Memory locations pointed to by index register Y plus 3
PPAGE
— Program overlay page (bank) number for extended
memory (>64 Kbytes).
Page
— Program overlay page
XH
— High-order byte
XL
— Low-order byte
( )
— Content of register or memory location
$
— Hexadecimal value
%
— Binary value



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